Hello, all. I've been trying to figure a way of having 120vAC power at shows to run a few old fans, an old Lionel set, etc. I've come to thinking a 10si alternator with a battery and inverter would be the best way of doing this compared to a noisy AC generator. I have an old US Falcon 5hp inboard I wanted to use, but it has no governor and I'm not so sure it would be a safe thing to run the alternator in the event of a load change, it could run away. (Or maybe it wouldn't, but I doubt it). I have an old ZD but I think it's too tired for the task. That leaves me with a '29 Dishpan 2hp FMZ. I have it running at just under rated speed, about 450 rpm. I'm thinking I could use a large pulley or maybe even the flywheel, and by my reading, I could spin the small Alt pulley at about 2500-3000rpm. My question is, how badly would the constant speed changes of the engine effect the alt? I've been thinking of using the 3 wire 10si, or an old spare Ford 1g off my pickup, so I can excite the alt without the excessive speed required by a 1 wire.